A maglev train track and its bolt

Abstract

The application discloses a maglev train track and a bolt thereof, and is applied to the technical field of track transportation, and comprises a bolt main body provided with a containing cavity; a power supply circuit arranged in the containing cavity and used for outputting electric energy to supply power to devices in the bolt; a sensor arranged in the containing cavity and used for detecting bolt load and sending the bolt load to a controller; the controller is arranged in the containing cavity and is used for sending first prompt information indicating bolt load abnormality to a stator switch station through a signal transmitting circuit when the received bolt load exceeds a preset range; and the signal transmitting circuit is arranged in the containing cavity and is in communication connection with the stator switch station in a wireless communication mode. The scheme of the application can effectively guarantee the reliable use of the bolt on the track line, reduce operation and maintenance cost, and improve operation and maintenance efficiency.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a maglev train track and its bolts. Background Technology

[0002] Linear motors are a crucial component of high-speed maglev trains, primarily consisting of a long stator section on the ground and onboard levitation electromagnets. Similar to other engineering projects requiring bolts for fixation, the long stator section is also bolted to the track beam base. Maglev trains rely on the electromagnetic force between the long stator section on the ground track and the onboard levitation electromagnets to achieve levitation and traction. Therefore, precise control of the levitation gap between the stator section and the electromagnets is crucial, placing higher demands on the flatness and tightness of the long stator section installation.

[0003] During the high-speed operation of a maglev train, track vibrations will inevitably affect the bolts. If the bolts loosen, it may cause misalignment of long stator sections of the track, or even increase the gap between stator sections. In severe cases, it may affect the train's levitation and traction control, and even pose a great threat to the safe operation of the train.

[0004] Currently, inspections are mainly conducted manually. Some bolts have QR codes on their surfaces for manual scanning and identification. Other bolts need to be connected to external circuits so that the circuits can read the bolt's looseness status. Since maglev trains primarily operate outdoors, QR codes are difficult to read in environments with ice and snow or poor visibility. Furthermore, manual inspections are costly and inefficient. For track lines spanning thousands of meters, especially long trunk lines, relying on external circuits to obtain relevant information is impractical for practical application.

[0005] In conclusion, how to effectively ensure the reliable use of bolts on track lines, reduce maintenance costs, and improve maintenance efficiency are technical problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a maglev train track and its bolts to effectively ensure the reliable use of bolts on the track, reduce maintenance costs, and improve maintenance efficiency.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A bolt for a maglev train track, comprising:

[0009] Bolt body with a receiving cavity;

[0010] A power supply circuit installed in the cavity is used to output electrical energy to power the components in the bolt.

[0011] Sensors installed in the receiving cavity are used to detect bolt loads and send them to the controller;

[0012] The controller installed in the receiving cavity is used to send a first prompt message indicating that the bolt load is abnormal to the stator switch station through a signal transmitting circuit when the received bolt load exceeds a preset range;

[0013] The signal transmitting circuit is installed in the receiving cavity and is connected to the stator switch station via wireless communication.

[0014] Preferably, the power supply circuit includes:

[0015] An inductive power harvesting circuit is used to generate and output electrical energy in a non-contact manner.

[0016] A power processing circuit connected to the induced energy acquisition circuit for power conversion.

[0017] Preferably, the inductive power acquisition circuit includes: a coil and / or a photovoltaic circuit.

[0018] Preferred options also include:

[0019] An energy storage device disposed in the receiving cavity and connected to the power supply circuit.

[0020] Preferably, the energy storage device is a battery or a capacitor.

[0021] Preferably, the sensor is a pressure sensor, which is installed in the central hole of the screw to detect the bolt load through the deformation of the central hole.

[0022] Preferred options also include:

[0023] A mounting part for fixing the pressure sensor.

[0024] Preferably, it further includes: a horizontal accuracy calibration device for detecting the horizontal installation accuracy of the bolt;

[0025] The controller is connected to the horizontal accuracy calibration device and is also used for:

[0026] During installation, when the horizontal installation accuracy of the bolt meets the horizontal installation accuracy standard, the signal transmitting circuit outputs a first installation prompt message indicating that the bolt installation is qualified.

[0027] During the operation of the maglev train, if the horizontal installation accuracy of the bolt does not meet the horizontal installation accuracy standard, a second installation prompt message indicating that the bolt installation is unqualified will be output through the signal transmission circuit.

[0028] Preferably, the horizontal accuracy calibration device is a first infrared ranging device disposed on the side wall of the bolt head;

[0029] The maglev train track has multiple bolts, and for any one bolt, the first infrared ranging device of the bolt emits infrared rays to the adjacent bolts corresponding to the bolt in a preset manner to detect the horizontal installation accuracy of the bolt.

[0030] Preferably, it further includes: a display device connected to the controller;

[0031] The controller is also used to: after sending a first prompt message indicating abnormal bolt load to the stator switch station via a signal transmitting circuit, control the display device to display the message.

[0032] Preferred options also include:

[0033] A suspension gap detection device is used to detect the suspension gap between the bolt and the maglev train when the maglev train passes by.

[0034] The controller is connected to the suspension gap detection device and is also used for:

[0035] The signal transmitting circuit transmits the suspension gap detected by the suspension gap detection device to the vehicle-mounted signal receiving device.

[0036] Preferably, the suspension gap detection device is a second infrared ranging device disposed on the top surface of the bolt head.

[0037] Preferred options also include:

[0038] A positioning device is used to reflect the position information of the bolt.

[0039] Preferably, the positioning device is a QR code affixed to the top surface of the bolt head, or an RFID tag deployed in the receiving cavity.

[0040] A maglev train track, comprising bolts as described in any of the preceding claims.

[0041] The technical solution provided in this invention involves a receiving cavity in the bolt body, within which the power supply circuit, sensor, controller, and signal transmission circuit are all housed, thus not affecting the bolt's operation. The power supply circuit outputs electrical energy to power the components within the bolt, while the sensor detects the bolt load and sends it to the controller. The controller determines whether the bolt is loose by judging whether the received bolt load exceeds a preset range. If the bolt load exceeds the preset range, the controller sends a first warning message indicating an abnormal bolt load to the stator switch station via wireless communication through the signal transmission circuit. As can be seen, in this solution, when the bolt becomes loose, it automatically sends a first warning message to the stator switch station, eliminating the need for manual inspection or external circuitry. This effectively ensures the reliable use of bolts on the track, reduces maintenance costs, and improves maintenance efficiency. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of a bolt for a maglev train track according to the present invention;

[0044] Figure 2 This is a schematic diagram of the structure of bolts on a maglev train track in a specific embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of the bolt installation position in a specific embodiment of the present invention;

[0046] Figure 4 This is a schematic diagram of the bolt structure of the maglev train track in another specific embodiment of the present invention. Detailed Implementation

[0047] The core of this invention is to provide a bolt for maglev train tracks, which can effectively ensure the reliable use of bolts on the track, reduce maintenance costs, and improve maintenance efficiency.

[0048] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a bolt for a maglev train track according to the present invention. The bolt for the maglev train track may include:

[0050] Bolt body with a receiving cavity;

[0051] The power circuit 10, installed in the receiving cavity, is used to output electrical energy to power the components in the bolt.

[0052] Sensors 20, installed in the receiving cavity, are used to detect bolt loads and send them to the controller 30;

[0053] The controller 30, installed in the receiving cavity, is used to send a first warning message indicating abnormal bolt load to the stator switch station via the signal transmitting circuit 40 when the received bolt load exceeds the preset range.

[0054] A signal transmitting circuit 40 is installed in the receiving cavity and is connected to the stator switch station via wireless communication.

[0055] The bolt body includes a bolt head and a shank. The specific shape and position of the receiving cavity can be set and adjusted according to actual needs, as long as it does not affect the use of the bolt and can accommodate the various circuit devices in this application. Furthermore, in practical applications, because the bolt head has a relatively large space, a receiving cavity is usually provided in the bolt head, for example... Figure 2 In one implementation method, a receiving cavity is provided at the head of the bolt.

[0056] The power supply circuit 10 can output electrical energy to power the components in the bolt. In other words, any component in the bolt that requires power can be powered by the power supply circuit 10. Of course, the connection can be direct or indirect, without affecting the implementation of the invention. For example, the sensor 20 can be directly connected to the power supply circuit 10 to receive power, or the sensor 20 can be indirectly powered by the power supply circuit 10 through the controller 30. Figure 1 The image shows that sensor 20 is directly connected to power circuit 10 to receive power.

[0057] The power supply circuit 10 can generate electrical energy in a non-contact manner or by connecting to an external power source. However, it is understandable that, due to the long track and numerous bolts of the maglev train, the non-contact method is more commonly used and suitable in practical applications. If the power supply circuit 10 is connected to an external power source, a large-capacity battery is typically required inside the bolts to allow for longer intervals between recharging cycles.

[0058] In one specific embodiment of the present invention, see [reference needed]. Figure 4 The power supply circuit 10 may specifically include:

[0059] The inductive power acquisition circuit 11 is used to generate and output electrical energy in a non-contact manner;

[0060] A power processing circuit 12, connected to the induced power acquisition circuit 11, is used for power conversion.

[0061] Since the inductive power acquisition circuit 11 generates electrical energy in a non-contact manner, this implementation method is also a more suitable implementation method in practical applications. There are also various specific non-contact methods for generating electrical energy. For example, in practical applications, the inductive power acquisition circuit 11 may specifically include: a coil and / or a photovoltaic circuit.

[0062] When the induced energy harvesting circuit 11 is a coil, it induces a voltage of a certain amplitude from the surrounding alternating electromagnetic field. When the induced energy harvesting circuit 11 is a photovoltaic circuit, it converts solar energy into electrical energy. Of course, in some cases, the induced energy harvesting circuit 11 can also include a coil and a photovoltaic circuit, that is, a coil and a photovoltaic circuit are simultaneously installed in the bolt, allowing both to generate induced energy together.

[0063] Considering that the electrical energy directly output by the induced energy harvesting circuit 11 usually does not meet the usage requirements of various circuit devices, this embodiment also includes a power processing circuit 12 for power conversion. The specific structure of the power processing circuit 12 can be set and selected as needed. For example, in one case, the power processing circuit 12 is a rectifier circuit to convert the AC power generated by the induced energy harvesting circuit 11 into DC power. In other cases, the power processing circuit 12 also includes a boost / buck circuit connected to the rectifier circuit to meet the voltage requirements of different circuit devices in the bolt. In still other cases, the power processing circuit 12 also includes an inverter circuit connected to the rectifier circuit to meet the AC power requirements of some circuit devices in the bolt.

[0064] In one specific embodiment of the present invention, it may further include an energy storage device 13 disposed in the receiving cavity and connected to the power supply circuit 10. The energy storage device 13 may be, for example, a battery or a capacitor. By providing the energy storage device 13, excess electrical energy generated by the induced electrical energy acquisition circuit 11 can be stored, which is beneficial for energy saving and also improves the flexibility of power supply. That is, when the power supply circuit 10 cannot generate electrical energy, it can be powered by the energy storage device 13.

[0065] It should also be noted that, Figure 4 The diagram only shows the connection between the controller 30 and the power processing circuit 12. Figure 2 Other circuit components can be powered from the controller 30 or directly connected to the power processing circuit 12 as needed, without affecting the implementation of the present invention.

[0066] This application uses sensor 20 to detect bolt load and send it to controller 30. The specific type of sensor 20 can be set according to actual needs. For example, in a specific embodiment of the present invention, considering that detecting bolt load by pressure sensor 20 is low-cost and convenient, sensor 20 can be specifically a pressure sensor 20. The pressure sensor 20 is arranged in the central hole of the screw to detect bolt load by the deformation of the central hole. Figure 2 The implementation method adopts this approach. Different bolt loads result in different bolt deformations, allowing the pressure sensor 20 to detect the current bolt load.

[0067] Furthermore, in Figure 2 In addition, a fixing part 21 for fixing the pressure sensor 20 is provided to ensure that the pressure sensor 20 can be effectively fixed in its installation position, which is conducive to ensuring the accuracy of the detected bolt load. Figure 2 The fixing part 21 is specifically a pressure plate used to fix the pressure sensor 20.

[0068] In addition, the pressure sensor 20 can be fabricated using multiple processes, such as MEMS chips, grating implantation, high-sensitivity small-size piezoresistors, and any other feasible fabrication process.

[0069] The controller 30 can receive the bolt load detected by the sensor 20. When the bolt load exceeds the preset range, it indicates that the bolt load is abnormal. The controller 30 can then send the first prompt message indicating the abnormal bolt load to the stator switch station through the signal transmission circuit 40 in a wireless communication manner.

[0070] The bolt load exceeds the preset range, meaning the bolt load is either too low or too high. When the bolt load is too low, it indicates that the bolt is loose, while when the bolt load is too high, it indicates that there may be an abnormality such as track twisting.

[0071] Furthermore, in practical applications, the controller 30 can also perform filtering and noise reduction on the bolt load detected by the sensor 20 to improve the accuracy of the detection results. It can also perform verification; for example, if the detected bolt load exceeds a preset range at a certain moment, to avoid false detections caused by noise, the controller 30 will not immediately send a first alert message through the signal transmission circuit 40. Instead, it will wait for a certain period of time. Only if the bolt load detected by the sensor 20 still exceeds the preset range within this period will the controller 30 send the first alert message to the stator switch station through the signal transmission circuit 40.

[0072] The stator switch station can manage several bolts, meaning that for all these bolts, the first prompt message sent by the signal transmitting circuit 40 is sent to the same stator switch station.

[0073] In one specific embodiment of the present invention, it may further include: a horizontal accuracy calibration device 50, used to detect the horizontal installation accuracy of the bolt;

[0074] The controller 30 is connected to the horizontal accuracy calibration device 50 and is also used for:

[0075] During installation, when the horizontal installation accuracy of the bolts meets the horizontal installation accuracy standard, the signal transmitting circuit 40 outputs the first installation prompt message indicating that the bolt installation is qualified;

[0076] During the operation of the maglev train, if the horizontal installation accuracy of the bolts does not meet the horizontal installation accuracy standard, the signal transmission circuit 40 will output a second installation prompt message indicating that the bolt installation is unqualified.

[0077] Considering the high precision requirements for the stator section and cable installation of maglev trains, traditional bolts cannot solve this problem. Therefore, in this embodiment, when installing bolts, the horizontal precision calibration device 50 can determine whether the bolts are installed correctly. That is, the signal transmission circuit 40 can output a first installation prompt message indicating that the bolts are installed correctly. Of course, if the horizontal installation precision does not meet the horizontal installation precision standard, the controller 30 can also output a second installation prompt message indicating that the bolts are not installed correctly through the signal transmission circuit 40.

[0078] In subsequent use, that is, during the operation of the maglev train, the horizontal accuracy calibration device 50 can also be used to determine whether the bolt has moved in the horizontal direction, that is, to determine whether the horizontal installation accuracy of the bolt meets the horizontal installation accuracy standard.

[0079] The specific type of the horizontal accuracy calibration device 50 can be selected as needed. Considering that the horizontal installation accuracy of the bolt can be conveniently and effectively determined by the infrared ranging device, in a specific embodiment of the present invention, the horizontal accuracy calibration device 50 can be specifically a first infrared ranging device set on the side wall of the bolt head; wherein, multiple bolts are set on the maglev train track, and for any one bolt, the first infrared ranging device of the bolt emits infrared rays to the preset adjacent bolts corresponding to the bolt to detect the horizontal installation accuracy of the bolt.

[0080] When the first infrared ranging device is used as the horizontal accuracy calibration device 50, it emits infrared rays to the adjacent bolts corresponding to the bolt. The distance between the first infrared ranging device and the adjacent bolts corresponding to the bolt can be determined by the time interval between signal transmission and signal feedback. It is understood that when the horizontal position of the bolt or its adjacent bolts deviates, the distance detected by the first infrared ranging device will exceed a preset range. Consequently, the controller 30 will output a second installation prompt message indicating that the bolt installation is unqualified through the signal transmission circuit 40.

[0081] For any bolt on the maglev train track, the adjacent bolts corresponding to that bolt can be pre-set, for example, see [reference needed]. Figure 3 , Figure 3 In this diagram, the direction perpendicular to the plane of the paper represents the extension direction of the maglev train track. For example, on one side of the track, the first infrared ranging device of bolt #1 emits an infrared signal to the adjacent bolt #2 to detect the horizontal installation accuracy of bolt #1, while bolt #2 emits an infrared signal to the adjacent bolt #3 to detect the horizontal installation accuracy of bolt #2, and so on. Similarly, the first infrared ranging device of bolt #1 emits an infrared signal to the adjacent bolt #2 to detect the horizontal installation accuracy of bolt #1, and the first infrared ranging device of bolt #2 emits an infrared signal to bolt #1 to detect the horizontal installation accuracy of bolt #2. Likewise, bolts #3 and #4 form a group of adjacent bolts, mutually detecting their respective horizontal installation accuracy, without affecting the implementation of this invention. Figure 3 In the process, bolts are installed on both sides of the track. For the bolts on the other side of the track, the adjacent bolts of each bolt can be pre-set to check the horizontal installation accuracy of each bolt.

[0082] In addition, for ease of use, for example Figure 2 In one embodiment, two horizontal accuracy calibration devices 50 can be provided on the side wall of the bolt head. These two horizontal accuracy calibration devices 50 can be, for example, first infrared ranging devices, so that the bolt can be tested for horizontal installation accuracy regardless of which direction it faces toward the track.

[0083] In one specific embodiment of the present invention, it may further include: a display device connected to the controller 30;

[0084] The controller 30 is also used to control the display device to display information after sending a first warning message indicating abnormal bolt load to the stator switch station via the signal transmitting circuit 40.

[0085] Considering that when a bolt experiences abnormal load, the controller 30 will send a first warning message indicating abnormal bolt load to the stator switch station via the signal transmission circuit 40, requiring subsequent maintenance by personnel, such as replacing the bolt. In this embodiment, to facilitate quick location of the bolt with abnormal load on-site, the controller 30 can control a display device to display the information. The display device is typically an indicator light, which can display information through different colors, flashing, or other methods.

[0086] In one specific embodiment of the present invention, it may further include:

[0087] The suspension gap detection device 60 is used to detect the suspension gap between the bolt and the maglev train when the maglev train passes by.

[0088] The controller 30 is connected to the suspension gap detection device 60 and is also used for:

[0089] The suspension gap is transmitted to the vehicle-mounted signal receiving device via the signal transmitting circuit 40.

[0090] There are various ways to detect the suspension gap between the bolt and the maglev train. Considering that the suspension gap can be conveniently and effectively determined by an infrared ranging device, in a specific embodiment of the present invention, the suspension gap detection device 60 can be specifically a second infrared ranging device set on the top surface of the bolt head.

[0091] It should be noted that the maglev train system is equipped with a dedicated suspension gap sensor 20 to obtain the suspension gap. In this embodiment of the application, the suspension gap detection device 60, for example, the second infrared ranging device, is used to detect the suspension gap between the bolt and the maglev train, which can serve as a redundant supplement.

[0092] The controller 30 can transmit the suspension gap detected by the suspension gap detection device 60 to the vehicle signal receiving device via the signal transmitting circuit 40. This can be used in emergency situations, i.e., when the suspension gap sensor 20 malfunctions. Alternatively, the suspension gap detected by the suspension gap detection device 60 can be used as a calibration value. If the suspension gap sensor 20 is not malfunctioning, but the detected value is inconsistent with the calibration value, the value detected by the suspension gap sensor 20 shall prevail. However, subsequent maintenance personnel can investigate the incident and correct this anomaly.

[0093] In one specific embodiment of the present invention, it may further include:

[0094] The positioning device 70 is used to reflect the position information of the bolt. The positioning device 70 may be a QR code affixed to the top surface of the bolt head, or an RFID tag deployed in the receiving cavity.

[0095] The maglev train system is equipped with a dedicated speed measurement and positioning device 70. In this embodiment, a positioning device 70 reflecting the bolt's position information is installed in the bolt, which can serve as redundant information. That is, the train can obtain the bolt's position information carried in the bolt's positioning device 70. When the train's dedicated speed measurement and positioning device 70 fails, the bolt's position information provided by the positioning device 70 can be used temporarily, which helps ensure the train's reliability.

[0096] Furthermore, in practical applications, a protective cover will be installed, and considering that the first and second infrared ranging devices in the bolt cannot be blocked, then... Figure 2 In this implementation, after the protective cover is set, openings can be made at the corresponding positions.

[0097] The technical solution provided in this invention involves a receiving cavity in the bolt body, where the power supply circuit 10, sensor 20, controller 30, and signal transmitting circuit 40 are all housed, thus not affecting the bolt's use. The power supply circuit 10 outputs electrical energy to power the components within the bolt, while the sensor 20 detects the bolt load and sends it to the controller 30. The controller 30 determines whether the bolt is loose by judging whether the received bolt load exceeds a preset range. If the bolt load exceeds the preset range, the controller 30 sends a first warning message indicating abnormal bolt load to the stator switch station via wireless communication through the signal transmitting circuit 40. As can be seen, in this solution, when the bolt is loose, it automatically sends a first warning message to the stator switch station, eliminating the need for manual inspection and external circuitry. This effectively ensures the reliable use of bolts on the track, reduces maintenance costs, and improves maintenance efficiency.

[0098] Corresponding to the above embodiments of bolts for maglev train tracks, this embodiment of the invention also provides a maglev train track, which may include bolts for maglev train tracks as in any of the above embodiments. It can be referred to in correspondence with the above description, and will not be repeated here.

[0099] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0100] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0101] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A bolt for a maglev train track, characterized in that, include: Bolt body with a receiving cavity; A power supply circuit installed in the cavity is used to output electrical energy to power the components in the bolt. Sensors installed in the receiving cavity are used to detect bolt loads and send them to the controller; The controller installed in the receiving cavity is used to send a first prompt message indicating that the bolt load is abnormal to the stator switch station through a signal transmitting circuit when the received bolt load exceeds a preset range; The signal transmitting circuit is installed in the receiving cavity and is connected to the stator switch station via wireless communication. It also includes: a horizontal accuracy calibration device for detecting the horizontal installation accuracy of the bolts; The controller is connected to the horizontal accuracy calibration device and is also used for: During installation, when the horizontal installation accuracy of the bolt meets the horizontal installation accuracy standard, the signal transmitting circuit outputs a first installation prompt message indicating that the bolt installation is qualified. During the operation of the maglev train, if the horizontal installation accuracy of the bolt does not meet the horizontal installation accuracy standard, a second installation prompt message indicating that the bolt installation is unqualified will be output through the signal transmission circuit. The horizontal accuracy calibration device is a first infrared ranging device installed on the side wall of the bolt head. The maglev train track is equipped with multiple bolts, and for any one bolt, the first infrared ranging device of the bolt emits infrared rays to the adjacent bolts corresponding to the bolt in a preset manner to detect the horizontal installation accuracy of the bolt. It also includes: a suspension gap detection device, used to detect the suspension gap between the bolt and the maglev train when the maglev train passes by; The controller is connected to the suspension gap detection device and is also used for: The signal transmitting circuit transmits the suspension gap detected by the suspension gap detection device to the vehicle signal receiving device. The suspension gap detection device is a second infrared ranging device installed on the top surface of the bolt head.

2. The bolts for the maglev train track according to claim 1, characterized in that, The power supply circuit includes: An inductive power harvesting circuit is used to generate and output electrical energy in a non-contact manner. A power processing circuit connected to the induced energy acquisition circuit for power conversion.

3. The bolts for the maglev train track according to claim 2, characterized in that, The inductive power acquisition circuit includes: a coil and / or a photovoltaic circuit.

4. The bolts for the maglev train track according to claim 1, characterized in that, Also includes: An energy storage device disposed in the receiving cavity and connected to the power supply circuit.

5. The bolts for the maglev train track according to claim 4, characterized in that, The energy storage device is a battery or a capacitor.

6. The bolts for the maglev train track according to claim 1, characterized in that, The sensor is a pressure sensor, which is installed in the central hole of the screw to detect the bolt load through the deformation of the central hole.

7. The bolts for the maglev train track according to claim 6, characterized in that, Also includes: A mounting part for fixing the pressure sensor.

8. The bolts for the maglev train track according to claim 1, characterized in that, Also includes: Display device connected to the controller; The controller is also used to: after sending a first prompt message indicating abnormal bolt load to the stator switch station via a signal transmitting circuit, control the display device to display the message.

9. The bolts for the maglev train track according to any one of claims 1 to 8, characterized in that, Also includes: A positioning device is used to reflect the position information of the bolt.

10. The bolts for the maglev train track according to claim 9, characterized in that, The positioning device is either a QR code affixed to the top surface of the bolt head or an RFID tag deployed in the receiving cavity.

11. A maglev train track, characterized in that, Includes bolts for the maglev train track as described in any one of claims 1 to 10.

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